Order of AustraliaOrder of Australia Full size medal Unmounted with 15cm ribbon as required for swing mounting. Miniature size medal Unmounted with 10cm ribbon as required for swing mounting. The Order of Australia was instituted with both a General Division and a Military Division. The two divisions are distinguished by a different ribbon. All classes of the order (Companion, Officer, Member and Medal of the Order) are available in both divisions. The eligibility